WARNING - OLD ARCHIVES

This is an archived copy of the Xen.org mailing list, which we have preserved to ensure that existing links to archives are not broken. The live archive, which contains the latest emails, can be found at http://lists.xen.org/
   
 
 
Xen 
 
Home Products Support Community News
 
   
 

xen-devel

Re: [Xen-devel] Xen 4.0 + PVOPS + Intel VTD + USB EHCI = BUG()

To: Weidong Han <weidong.han@xxxxxxxxx>
Subject: Re: [Xen-devel] Xen 4.0 + PVOPS + Intel VTD + USB EHCI = BUG()
From: "David P. Quigley" <dpquigl@xxxxxxxxxxxxx>
Date: Wed, 03 Feb 2010 11:38:33 -0500
Cc: Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>, "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx>, Daniel Stodden <daniel.stodden@xxxxxxxxxx>
Delivery-date: Wed, 03 Feb 2010 08:48:16 -0800
Envelope-to: www-data@xxxxxxxxxxxxxxxxxxx
In-reply-to: <4B68E8A5.6030405@xxxxxxxxx>
List-help: <mailto:xen-devel-request@lists.xensource.com?subject=help>
List-id: Xen developer discussion <xen-devel.lists.xensource.com>
List-post: <mailto:xen-devel@lists.xensource.com>
List-subscribe: <http://lists.xensource.com/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=subscribe>
List-unsubscribe: <http://lists.xensource.com/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=unsubscribe>
Organization: National Security Agency
References: <20100122221231.GA32286@xxxxxxxxxxxxxxxxxxx> <20100122224307.GA9943@xxxxxxxxxxxxxxxxxxx> <1264461835.20158.67.camel@xxxxxxxxxxxxxxxxxxxxxxxxxxxxx> <20100126144212.GA10928@xxxxxxxxxxxxxxxxxxx> <1264524172.20158.82.camel@xxxxxxxxxxxxxxxxxxxxxxxxxxxxx> <20100126165724.GA13847@xxxxxxxxxxxxxxxxxxx> <1264527964.20158.87.camel@xxxxxxxxxxxxxxxxxxxxxxxxxxxxx> <20100126181949.GA14346@xxxxxxxxxxxxxxxxxxx> <1264534209.20881.5.camel@xxxxxxxxxxxxxxxxxxxxxxxxxxxxx> <20100126194621.GC2861@xxxxxxxxxxx> <1264537282.20881.6.camel@xxxxxxxxxxxxxxxxxxxxxxxxxxxxx> <60E426D47DE8EA47AA104E65008A100D15B4215130@xxxxxxxxxxxxxxxxxxxxxxxxxxxxx> <1264618093.20881.9.camel@xxxxxxxxxxxxxxxxxxxxxxxxxxxxx> <60E426D47DE8EA47AA104E65008A100D15BB64342C@xxxxxxxxxxxxxxxxxxxxxxxxxxxxx> <1264695015.20881.17.camel@xxxxxxxxxxxxxxxxxxxxxxxxxxxxx> <60E426D47DE8EA47AA104E65008A100D162187B7EE@xxxxxxxxxxxxxxxxxxxxxxxxxxxxx> <1265060140.20881.39.camel@xxxxxxxxxxxxxxxxxxxxxxxxxxxxx> <4B68E8A5.6030405@xxxxxxxxx>
Sender: xen-devel-bounces@xxxxxxxxxxxxxxxxxxx
On Wed, 2010-02-03 at 11:08 +0800, Weidong Han wrote:
> David P. Quigley wrote:
> > On Sat, 2010-01-30 at 21:50 +0800, Han, Weidong wrote:
> >   
> >> It's so weird pvops dom0 still detects DMAR and enables it after zap DMAR 
> >> signature in Xen. Dom0 should not detect DMAR in ACPI after the signature 
> >> is zapped. 
> >>
> >> I suspect that your USB issue is caused by this. Pls have a try with turn 
> >> off VT-d in pvops config (# CONFIG_DMAR is not set) to see if it solves 
> >> your issue.
> >>
> >> Regards,
> >> Weidong
> >>
> >> -----Original Message-----
> >> From: David P. Quigley [mailto:dpquigl@xxxxxxxxxxxxx] 
> >> Sent: Friday, January 29, 2010 12:10 AM
> >> To: Han, Weidong
> >> Cc: Pasi Kärkkäinen; Daniel Stodden; xen-devel@xxxxxxxxxxxxxxxxxxx; Konrad 
> >> Rzeszutek Wilk
> >> Subject: RE: [Xen-devel] Xen 4.0 + PVOPS + Intel VTD + USB EHCI = BUG()
> >>
> >> I've attached the output from the patched xen hypervisor. I see the 
> >> message being printed out so it appears to be clearing the signature.
> >>
> >> Dave
> >>     
> >
> > So I managed to sucessfully book my pvops dom0 kernel with VT-D on in my
> > bios when I turned off DMAR from the dom0 kernel config. Is there
> > anything else you would like me to do to help hunt this bug down?
> >
> > Dave
> >
> >   
> Could you dump ACPI in native Linux and Xen dom0? Let's see what 
> difference between "zap" and "no zap" DMAR signature.
> 
> Regards,
> Weidong

Sure. How do I go about doing that?

Dave


_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel